ExamPlay Light Logo
Kirjaudu sisään

Mathematics for IGCSE & O level - Similarity (Section 1 - No. 10)

If the area of a circle increases by a factor of 9, by what factor has the radius increased?
3
6
9
81

Selitys

Area scale is length scale squared. So side = sqrt(area) = sqrt(9) = 3

Kommentit (0)

Mainos